Jack



Patented June 26, 1934 UNITED STATES PATENT OFFICE This invention relates to improvements in jacks, and has or its object to provide means, in connection with a jack standard, for rendering a swivel base on the lower end of the standard fixed and rigid.

It also has for its object to provide means for moving a load-carrying housing longitudinally of the standard. This means is operated by a pawl and ratchet mechanism through a nut which is threaded upon the standard. The housing which travels upon the screw and contains the nut therein is provided with a locking means to prevent the back rotation of the nut during the operation of the pawl and ratchet mechanism. Not only will the brake mechanism tend to prevent the rotation of the nut during the operation of the pawl and ratchet mechanism, but it also tends to prevent the rotation of the nut when a load is upon the housing.

These and other advantages will appear from the following description taken in connection with the drawings, in which one form of the invention is illustrated.

Referring to the drawings:

Figure 1 is a side elevation of the jack as a whole.

Figure 2 is a view at right angles to the jack, as shown in Figure 1.

Figure 3 is a longitudinal section through the jack with the screw partly broken away.

Figure 4 is a longitudinal section through the upper part of the housing, showing the anti-friction means between the housing and the nut which travels on the screw or standard.

Figure 5 is a section on the line 5-5 of Figure 3.

Figure 6 is a section through the base showing the bell-shaped casting lowered and the standard held fixed with relation to the base.

Figure 7 is a section similar to that shown i Figure 5 but with the bell-shaped casting elevated so that the standard may rock on the base.

This jack is adapted to be used for various purposes, but is particularly well adapted for use in connection with automobiles and may be used for straightening fenders and parts or" the body of an automobile.

While in the present instancethe standard 1 is shown to be screw threaded, other forms of standards may be used. On the lower end of the standard is a ball or head 2 adapted to engage a base or abutment 3 by means of a socket l in the central part of the base. The base is shown to be rectangular but any other suitable shape may be used.

As shown in Figures 1, 2 and 3, the standard is swiveled to the base and may rock with relation to the base, but in order to make the standard and the base rigid with respect to each other, there is provided on the standard a sleeve 5 which carries a bell-shaped casting 6. In the smaller end of this casting is a threaded sleeve 5 which, in production, may be cast integral with the casting and may be moved up and down on the standard by rotation. This bell-shaped member when in its lower position will engage the base so that the base cannot move with relation to the standard, and the two are held fixed with relation to each other.

Mounted upon the standard for traveling thereon is a housing '7, which has extending vertically therethrough a passageway 8 for the reception of the screw or standard. Within the housing is a space to accommodate a nut 9, which has a gear 10 thereon for the purpose of rotating the nut. The nut is located in the lower part of a cavity in the housing, and between the upper part of the nut and the upper part of the cavity is an anti-friction means composed of a lower bearing ring 11 and an upper bearing ring 12, each having a groove coacting with the groove in the other to provide a runway for balls 13. For the purpose of holding the two rings assembled with the balls therebetween, a casing 14 is provided. 88

At an angle to the passageway 8 there is provided in the housing 7 a hole 15. The outer end of this hole is threaded and receives a plug 16, which has a hole 17 extending therethrough. This plug has on its outer end a shoulder or bench structure 18. Fitting within the inner end of the hole 15 is a brake member 19, which has extending upwardly therefrom a stem 20. This stem extendsthrough the hole 17 in the plug 16, and has on its outer end a head 21. This head has a bench-like structure 22 which cooperates with the bench-like structure or the plug 16 for holding the brake 19 in one of two positions.

Around the stem 20 and between the brake 19 and the plug 16 is a spring 20'. Extending from one side of the housing I is a bracket 23, which has therein a slot or notch 24. Pivoted to the bracket and extending into the slot 24 is a gripper member 25. This gripper member cooperates with a wall of the bracket 23 for gripping within the slot 2 1 some member, such as a fender or anything else in connection with which this jack is adapted to-be used.

For the purpose of supporting operating mechanism thereex endsfrom the lower end and 117 one side of the housing 7 a spindle 26. This spindle has rotatably mounted thereon a gear 27, which has gear teeth 28 meshing with the gear 10 for rotating the nut and moving the housing longitudinally of the standard. These teeth are at an angle to the outer periphery of the gear 27. The outer periphery of the gear 27 has ratchet teeth 29 thereon, adapted to be engaged by a pawl on a lever 30. This pawl is indicated by the numeral 31 and is a double acting pawl and may be shifted for rotating the gear 2'? in any direction.

There is also extending from the outer wall and from the periphery of the gear 27 a handle 32 by which the gear may be rapidly rotated for adjusting the housing on the standard 1. In order to prevent the housing from rotating on the standard, the standard has therein a groove 33 in which a pin 34 in the housing fits. The upper end of the passageway 8 in the housing 7 is threaded as indicated by the numeral 35 in Figures 3 and 4. By this means any other suitable head member may be placed on the upper end of the housing, or a tube may be placed over the end of the standard or screw member 1 and caused to travel longitudinally of the standard for lifting a load or moving any object which it is desired be moved.

I desire to comprehend within my invention such modifications as may be embraced within my claims and the scope of my invention.

Having thus fully described my invention, what I claim as new and desire to secure by Letters Patent, is:

1. In a jack, a base, a threaded standard pivotally mounted on said base, a work-engaging member on the standard, and means threaded on said standard independent of the work-engaging member to engage the base to prevent the tilting of the standard on the base.

2. In a jack, a base, a screw threaded standard pivoted at one end to said base for swinging and rotary movements, a work-engaging member on the standard, and means threaded on said standard independent of the work-engaging member to engage the base to prevent the swinging movement of the standard on the base.

3. In a jack, a base, a screw threaded standard pivoted at one end to said base for swinging and rotary movements, a work-engaging member on the standard, and bell-shaped means threaded on said standard independent of the work-engaging member to engage the base to prevent the swinging movement of the standard on the base.

4. In a jack, a base having a socket therein, a threaded standard having a ball on one end fitting in said socket, a work-engaging member on the standard, and means threaded on said standard independent of the work-engaging member to engage the base to hold the standard rigid on the base.

5. In a jack, a base having a socket therein, a threaded standard having a ball on one end fitting in said socket, a work-engaging member on the standard, and a bell-shaped member threaded on said standard independent of the work-engaging member to be rotated into engagement with the base, whereby the standard is supported at right angles to the base.

6. In a jack, a standard, a housing supported on said standard, means engaging the housing and standard for moving the housing longitudinally of the standard, and brake means engaging said last-named means to prevent the movement of the housing on the standard except through the application of force.

'7. In a jack, a standard, a housing mounted on the standard, rotating means in the housing engaging said standard for moving the housing longitudinally of the standard, and friction means engaging said rotating means to prevent the accidental movement of the housing along the standard.

8. In a jack, in combination with a base having a standard extending upwardly therefrom, a housing on said standard, means in said housing engaging said standard for moving the housing longitudinally of the standard, and adjustably mounted friction means for engaging said lastnamed means to prevent the movement of the housing along the standard.

9. In a jack, in combination with a base having a standard thereon, a housing mounted on said standard, rotating means on said housing engaging said standard for moving the housing longitudinally of the standard, a friction plunger mounted in said housing adapted to engage said rotating means to prevent the rotation thereof, and means to prevent the operation of said friction means.

10. In a jack, in combination with a screw threaded standard, a housing mounted upon said standard, a nut threaded upon said standard and supported by said housing, means for rotating said nut whereby the housing is moved longitudinally of the standard, and friction means supported in said housing to engage said nut to prevent the rotation thereof.

11. In a jack, in combination with a threaded standard, a housing upon said standard, a nut rotatably mounted on said housing and engaging said standard, means for rotating said nut whereby the housing is moved longitudinally of the standard, and a friction plunger mounted in said housing to engage said nut to prevent the rotation thereof.

12. In a jack, in combination with a threaded standard, a nut threaded upon said standard, a housing supported on said standard by said nut, means to rotate the nut and to move the housing along the standard, and spring-pressed plunger means in the housing to engage said nut to prevent the rotation thereof.

13. In a jack, in combination with a threaded standard, a nut threaded on said standard, a housing located on said nut and around said standard, pawl means for rotating said nut, and frictional means to engage said nut to prevent the back rotation of the nut when the pawl means is being shifted.

14. In a jack, in combination with a standard, a housing mounted upon said standard, rotating means to engage said standard for moving the housing longitudinally thereof, and frictional means supported by said housing adapted to engage said last-named means to prevent the rotation thereof.

15. In a jack, a support-engaging member having a threaded standard extending therefrom, a work-engaging member mounted on said standard and adapted to move longitudinally thereof, rotating means for moving said work-engaging means along the standard, and a frictional plunger adapted to engage said rotating means to prevent its rotation.

16. In combination, a non-rotatable screw, spaced non-rotatable sleeves splined to said screw adapted to move longitudinally thereon, a gear threaded internally on said screw and rotating thereon carried by said sleeves, an arm having fender clamping means thereon carried by said sleeves and means carried by said sleeves for actuating said gear to move the sleeves and arms longitudinally of the screw without rotation.

17. In combination, a non-rotatable screw, spaced non-rotatable sleeves splined to said screw and adapted to move longitudinally thereon, a gear threaded internally on said screw and rotating thereon carried by said sleeves, an arm having fender clamping means thereon carried by said sleeves and means carried by said sleeves for actuating said gear to move the sleeves and arms longitudinally of the screw without rotation, said means comprising a second gear mounted on one of said sleeves connecting to said first mentioned gear and means for rotating said second gear.

18. In combination, a non-rotatable screw, spaced non-rotatable sleeves splined to said screw and adapted to move longitudinally thereon, a

gear threaded internally on said screw and rotating thereon carried by said sleeves, an arm having fender clamping means thereon carried by said sleeves, means carried by said sleeves in actuating said gear to move the sleeves and arms longitudinally of the screw without rotation, said means comprising a second gear mounted on one of said sleeves connecting the said first-mentioned gear and means for rotating said second gear, said means comprising step-by-step mechanism.

19. In combination, a non-rotatable screw, spaced non-rotatable sleeves splined to said screw and adapted to move longitudinally thereon, a gear threaded internally on said screw and rotating thereon carried by said sleeves, an arm having fender clamping means thereon carried by said sleeves, means carried by said sleeves for actuating said gear to move the sleeves and arms longitudinally of the screw without rotation, said means comprising a second gear mounted on one of said sleeves connecting the said first-mentioned gear, means for rotating said second gear, said means comprising step-by-step mechanism and an independent handle on the second gear for actuation of both gears independent of the step-by-step mechanism.

20. In combination, a non-rotatable screw, spaced non-rotatable sleeves splined to said screw and adapted to move longitudinally thereon, a gear threaded internally on said screw and rotating thereon carried by said sleeves, an arm having fender clamping means thereon carried by said sleeves, means carried by said sleeves in actuating said gear to move the sleeves and arms longitudinally of the screw without rotation, said means comprising a second gear mounted on one of said sleeves connecting the said first-mentioned gear, means for rotating said second gear, said means comprising step-by-step mechanism, an independent handle on the second gear for actuation of both gears independent of the step by-step mechanism and means for reversing the direction of movement of said stepby-step mechanism.

21. An automobile body and fender jack including a pair of members movable with reference to each other, an anchor having swivel connection with one of 'said members and engageable withone portion of an automobile for restraining the members against longitudinal movement in one direction, and means on the other of said members for latching the fender of the automobile to said last named member for reshaping said fender upon movement of said members relatively to each other.

22. An automobile body and fender jack including a pair of members movable with reference to eachother, an anchor having a fixed connection with one of said members and engageable with one portion of an automobile for restraining the members against longitudinal movement in one direction, and means on the other of said members for latching the fender of the automobile to said last-named member GUY A. COUNTRYlVlIAN. 

